Bulletin of the World Health Organization
Volume 100(2);  2022 Feb 1
https://www.ncbi.nlm.nih.gov/pmc/issues/399608/

Training community health workers for the COVID-19 response, India
Sachin S Singh, Lal Bahadur Singh
Bull World Health Organ. 2022 Feb 1; 100(2): 108–114. Published online 2021 Nov 25. doi: 10.2471/BLT.21.286902
PMCID: PMC8795851